Experimental And Numerical Study On FRP Mesh-reinforced Brick Masonry Subjected To Axial Compression

As natural disasters occurred frequently in recent years, and the implementation of the newspecification of masonry structure, make the application prospect of masonry structure in ourcountry by certain restrictions. FRP(Fiber Reinforced Polymer) is a kind of high performancecomposite materials has been widely used, have superiority with light weight, high strength,convenient for construction, strong corrosion resistance, not easy to change the structure. Based onthe proposed FRP mesh reinforced brick masonry concepts and methods, through a set of FRP meshreinforced brick masonry axial compressive test show the effectiveness of this new type of masonrystructure, to better show the mechanical performance of FRP mesh reinforced brick masonry.Paper first reviews the development of masonry structure and the current problems we arefacing, tells the various reinforcement and strengthening method of masonry structure, then tells theperformance characteristics of FRP material and practical application, and summarizes thereinforcement and strengthening masonry with FRP materials at home and abroad with relatedliterature, further tells the first test, the test phenomena,failure mode and the result is analyzed, thenbasis of the first test conducted on the second test and detailed design of experiment, tells theexperiment phenomenon, combined with the phenomenon and the contrast curve meshcharacteristics, effect and work mechanism of FRP mesh reinforced brick masonry are analyzed.After use the ANSYS finite element numerical analysis software establish FRP mesh reinforcedbrick masonry finite element numerical analysis model, and analyze the calculation results. Based onthe feasibility and the rationality of the existing finite element model, numerical analyse theinfluence of fiber layer layout and fiber ratio for bearing capacity. According to the unreinforcedmasonry and reinforced masonry axis compression member bearing capacity calculation formula ofmasonry structure design code, then modify experimental values with above formula, respectivelydeduced FRP mesh reinforced brick masonry axial compression member bearing capacitycalculation formula according to the results of experiment and finite element calculation results, andmodify experimental values with above formula, combine above two formula deduce FRP meshreinforced brick masonry axial compression member bearing capacity calculation formula,last use this formula correct and contrast experimental results.laying reticular FRP reinforced layer in horizontal mortar joint, through FRP mesh reinforcedbrick masonry axial compressive test show the effectiveness of this new type of masonry structure,compare with non fiber reinforced brick masonry, shows it has a lot of advantages such as highstrength, non secondary stress problem, don’t need to paste resin, without affecting the mortar jointthickness, save steel. Significant improvement bearing capacity and ductility, and effectively changethe final failure mode of the specimens. According to the regression analysis of experiment resultand finite element, concluded FRP mesh reinforced brick masonry axial compression memberbearing capacity calculation formula.